import { ApproximateTerrainHeights } from '../../Source/Cesium.js';
import { Cartesian3 } from '../../Source/Cesium.js';
import { JulianDate } from '../../Source/Cesium.js';
import { Math as CesiumMath } from '../../Source/Cesium.js';
import { Rectangle } from '../../Source/Cesium.js';
import { TimeIntervalCollection } from '../../Source/Cesium.js';
import { ConstantProperty } from '../../Source/Cesium.js';
import { Entity } from '../../Source/Cesium.js';
import { RectangleGeometryUpdater } from '../../Source/Cesium.js';
import { RectangleGraphics } from '../../Source/Cesium.js';
import { SampledProperty } from '../../Source/Cesium.js';
import { PrimitiveCollection } from '../../Source/Cesium.js';
import createDynamicGeometryUpdaterSpecs from '../createDynamicGeometryUpdaterSpecs.js';
import createDynamicProperty from '../createDynamicProperty.js';
import createGeometryUpdaterGroundGeometrySpecs from '../createGeometryUpdaterGroundGeometrySpecs.js';
import createGeometryUpdaterSpecs from '../createGeometryUpdaterSpecs.js';
import createScene from '../createScene.js';

describe('DataSources/RectangleGeometryUpdater', function() {

    var time;
    var scene;

    beforeAll(function() {
        scene = createScene();
        time = new JulianDate(0, 0);

        return ApproximateTerrainHeights.initialize();
    });

    afterAll(function() {
        scene.destroyForSpecs();

        ApproximateTerrainHeights._initPromise = undefined;
        ApproximateTerrainHeights._terrainHeights = undefined;
    });

    function createBasicRectangle() {
        var rectangle = new RectangleGraphics();
        var entity = new Entity();
        entity.rectangle = rectangle;
        entity.rectangle.coordinates = new ConstantProperty(new Rectangle(-1, -1, 1, 1));
        entity.rectangle.height = new ConstantProperty(0);
        return entity;
    }

    function createDynamicRectangle() {
        var entity = createBasicRectangle();
        entity.rectangle.extrudedHeight = createDynamicProperty(2);
        return entity;
    }

    function createBasicRectangleWithoutHeight() {
        var rectangle = new RectangleGraphics();
        var entity = new Entity();
        entity.rectangle = rectangle;
        entity.rectangle.coordinates = new ConstantProperty(new Rectangle(0, 0, 1, 1));
        return entity;
    }

    function createDynamicRectangleWithoutHeight() {
        var entity = createBasicRectangleWithoutHeight();
        entity.rectangle.rotation = createDynamicProperty(2);
        return entity;
    }

    it('Properly detects closed geometry.', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);
        entity.rectangle.extrudedHeight = new ConstantProperty(1000);
        updater._onEntityPropertyChanged(entity, 'rectangle');
        expect(updater.isClosed).toBe(true);
    });

    it('A time-varying coordinates causes geometry to be dynamic', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);
        entity.rectangle.coordinates = new SampledProperty(Rectangle);
        entity.rectangle.coordinates.addSample(JulianDate.now(), new Rectangle());
        updater._onEntityPropertyChanged(entity, 'rectangle');

        expect(updater.isDynamic).toBe(true);
    });

    it('A time-varying height causes geometry to be dynamic', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);
        entity.rectangle.height = new SampledProperty(Number);
        entity.rectangle.height.addSample(time, 1);
        updater._onEntityPropertyChanged(entity, 'rectangle');

        expect(updater.isDynamic).toBe(true);
    });

    it('A time-varying extrudedHeight causes geometry to be dynamic', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);
        entity.rectangle.extrudedHeight = new SampledProperty(Number);
        entity.rectangle.extrudedHeight.addSample(time, 1);
        updater._onEntityPropertyChanged(entity, 'rectangle');

        expect(updater.isDynamic).toBe(true);
    });

    it('A time-varying granularity causes geometry to be dynamic', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);
        entity.rectangle.granularity = new SampledProperty(Number);
        entity.rectangle.granularity.addSample(time, 1);
        updater._onEntityPropertyChanged(entity, 'rectangle');

        expect(updater.isDynamic).toBe(true);
    });

    it('A time-varying stRotation causes geometry to be dynamic', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);
        entity.rectangle.stRotation = new SampledProperty(Number);
        entity.rectangle.stRotation.addSample(time, 1);
        updater._onEntityPropertyChanged(entity, 'rectangle');

        expect(updater.isDynamic).toBe(true);
    });

    it('Creates geometry with expected properties', function() {
        var options = {
            height : 431,
            extrudedHeight : 123,
            granularity : 0.97,
            rotation : 1,
            stRotation : 12
        };

        var entity = createBasicRectangle();

        var rectangle = entity.rectangle;
        rectangle.outline = true;
        rectangle.rotation = new ConstantProperty(options.rotation);
        rectangle.stRotation = new ConstantProperty(options.stRotation);
        rectangle.height = new ConstantProperty(options.height);
        rectangle.extrudedHeight = new ConstantProperty(options.extrudedHeight);
        rectangle.granularity = new ConstantProperty(options.granularity);

        var updater = new RectangleGeometryUpdater(entity, scene);

        var instance;
        var geometry;
        instance = updater.createFillGeometryInstance(time);
        geometry = instance.geometry;
        expect(geometry._rotation).toEqual(options.rotation);
        expect(geometry._stRotation).toEqual(options.stRotation);
        expect(geometry._surfaceHeight).toEqual(options.height);
        expect(geometry._granularity).toEqual(options.granularity);
        expect(geometry._extrudedHeight).toEqual(options.extrudedHeight);
        expect(geometry._offsetAttribute).toBeUndefined();

        instance = updater.createOutlineGeometryInstance(time);
        geometry = instance.geometry;
        expect(geometry._surfaceHeight).toEqual(options.height);
        expect(geometry._granularity).toEqual(options.granularity);
        expect(geometry._extrudedHeight).toEqual(options.extrudedHeight);
        expect(geometry._offsetAttribute).toBeUndefined();
    });

    it('dynamic updater sets properties', function() {
        var rectangle = new RectangleGraphics();
        rectangle.coordinates = createDynamicProperty(new Rectangle(0, 0, 1, 1));
        rectangle.show = createDynamicProperty(true);
        rectangle.height = createDynamicProperty(3);
        rectangle.extrudedHeight = createDynamicProperty(2);
        rectangle.outline = createDynamicProperty(true);
        rectangle.fill = createDynamicProperty(true);
        rectangle.granularity = createDynamicProperty(2);
        rectangle.stRotation = createDynamicProperty(1);

        var entity = new Entity();
        entity.rectangle = rectangle;

        var updater = new RectangleGeometryUpdater(entity, scene);
        var dynamicUpdater = updater.createDynamicUpdater(new PrimitiveCollection(), new PrimitiveCollection());
        dynamicUpdater.update(time);

        var options = dynamicUpdater._options;
        expect(options.id).toEqual(entity);
        expect(options.rectangle).toEqual(rectangle.coordinates.getValue());
        expect(options.height).toEqual(rectangle.height.getValue());
        expect(options.extrudedHeight).toEqual(rectangle.extrudedHeight.getValue());
        expect(options.granularity).toEqual(rectangle.granularity.getValue());
        expect(options.stRotation).toEqual(rectangle.stRotation.getValue());
        expect(options.offsetAttribute).toBeUndefined();
    });

    it('geometryChanged event is raised when expected', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);
        var listener = jasmine.createSpy('listener');
        updater.geometryChanged.addEventListener(listener);

        entity.rectangle.height = new ConstantProperty(82);
        updater._onEntityPropertyChanged(entity, 'rectangle');
        expect(listener.calls.count()).toEqual(1);

        entity.availability = new TimeIntervalCollection();
        updater._onEntityPropertyChanged(entity, 'availability');
        expect(listener.calls.count()).toEqual(2);

        entity.rectangle.coordinates = undefined;
        updater._onEntityPropertyChanged(entity, 'rectangle');
        expect(listener.calls.count()).toEqual(3);

        //Since there's no valid geometry, changing another property should not raise the event.
        entity.rectangle.height = undefined;
        updater._onEntityPropertyChanged(entity, 'rectangle');

        //Modifying an unrelated property should not have any effect.
        entity.viewFrom = new ConstantProperty(Cartesian3.UNIT_X);
        updater._onEntityPropertyChanged(entity, 'viewFrom');
        expect(listener.calls.count()).toEqual(3);
    });

    it('computes center', function() {
        var entity = createBasicRectangle();
        var updater = new RectangleGeometryUpdater(entity, scene);

        expect(updater._computeCenter(time)).toEqualEpsilon(Cartesian3.fromDegrees(0.0, 0.0), CesiumMath.EPSILON10);
    });

    function getScene() {
        return scene;
    }
    createGeometryUpdaterSpecs(RectangleGeometryUpdater, 'rectangle', createBasicRectangle, getScene);

    createDynamicGeometryUpdaterSpecs(RectangleGeometryUpdater, 'rectangle', createDynamicRectangle, getScene);

    createGeometryUpdaterGroundGeometrySpecs(RectangleGeometryUpdater, 'rectangle', createBasicRectangleWithoutHeight, createDynamicRectangleWithoutHeight, getScene);
}, 'WebGL');
